大约有 48,000 项符合查询结果(耗时:0.0645秒) [XML]

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Is it possible to cache POST methods in HTTP?

With very simple caching semantics: if the parameters are the same (and the URL is the same, of course), then it's a hit. Is that possible? Recommended? ...
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What are the differences between Generics in C# and Java… and Templates in C++? [closed]

I mostly use Java and generics are relatively new. I keep reading that Java made the wrong decision or that .NET has better implementations etc. etc. ...
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Do you (really) write exception safe code? [closed]

Exception handling (EH) seems to be the current standard, and by searching the web, I can not find any novel ideas or methods that try to improve or replace it (well, some variations exist, but nothing novel). ...
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How do I use a Boolean in Python?

... Actually Python didn't have a boolean type for a long time (as in old C), and some programmers still use integers instead of booleans. share | improve this answer | follow ...
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How to combine two or more querysets in a Django view?

I am trying to build the search for a Django site I am building, and in that search, I am searching in 3 different models. And to get pagination on the search result list, I would like to use a generic object_list view to display the results. But to do that, I have to merge 3 querysets into one. ...
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List comprehension vs map

...re NOT making a lambda for the purpose, but using the same function in map and a listcomp). List comprehensions may be faster in other cases and most (not all) pythonistas consider them more direct and clearer. An example of the tiny speed advantage of map when using exactly the same function: $ p...
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SQL Server Text type vs. varchar data type [closed]

I have variable length character data and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL type, pros and cons in performance/footprint/function. ...
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Facebook database design?

... Keep a friend table that holds the UserID and then the UserID of the friend (we will call it FriendID). Both columns would be foreign keys back to the Users table. Somewhat useful example: Table Name: User Columns: UserID PK EmailAddress Password Ge...
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StringIO in Python3

I am using Python 3.2.1 and I can't import the StringIO module. I use io.StringIO and it works, but I can't use it with numpy 's genfromtxt like this: ...
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Meaning of -

I am new to XML and I am trying to understand the basics. I read the line below in "Learning XML", but it is still not clear, for me. Can someone point me to a book or website which explains these basics clearly? ...